Matrosova, N.D. and Shtennikov, D.G. 2019. THE PERSONIFICATION OF THE USER’S INTERFACE: CLASSIFICATION VS. CLUSTERIZATION OF USERS OF ONLINE COURSES. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference. 2, (Jun. 2019), 218–221. DOI:https://doi.org/10.17770/etr2019vol2.4080.